I have a 2004 Vibe and am getting lousy gas mileage. Car has 1000 miles on it an I'm getting between 24.5 mpg and 27.8 mpg. Driving mix is about 75% highway and 25% city. EPA rates the car 29 city/34 highway. I live east of Sacramento in the foothills and drive down and up the hill. Why such crappy mileage? I have a 2004 Honda Accord, it weighs more and has a bigger engine and I get between 30-32 mpg. Why is my mileage way less than the EPA estimate. All the cars I've had in the past get somewhere in the middle of the EPA ratings. Any ideas?